function submitForm(){		 

		var user_name = document.getElementById("user_id").value;
		if(null == user_name || user_name == ""){
		alert("请选择相应用户名!");
		}

		var new_passwd = document.getElementById("new_passwd").value;
		 if(null == new_passwd || new_passwd == ""){
		  	alert("新密码不能为空!");
		  	document.getElementById("new_passwd").focus();
		  	return false;
		  }else if(new_passwd.length<6){
		  	alert("密码长度不能少于6位!");
		  	document.getElementById("new_passwd").focus();
		  	return false;
		  }
		  
		var sure_passwd = document.getElementById("confirm_password").value;
		  if(null == sure_passwd || sure_passwd == ""){
		  	alert("确认密码不能为空!");
		  	document.getElementById("confirm_password").focus();
		  	return false;
		  }else if(sure_passwd.length<6){
		  	alert("确认密码长度不能少于6位!");
		  	document.getElementById("confirm_password").focus();
		  	return false;
		  }else if(new_passwd != sure_passwd){
		  	alert("两次输入密码不正确!");
		  	document.getElementById("confirm_password").focus();
		  	return false;
		  }
		  
	  	document.addForm.submit(); 
		
		   }